How Did Don Imus Go Down in Flames?

Last night, the Rutgers women's basketball team met with ousted talk-show host Don Imus and this morning, coach Vivian Stringer called him "remorseful." Time magazine once named Imus one of America's 25 most influential people. He's in the National Broadcaster's Hall of Fame. But he's out of a job for the moment, for calling the Scarlet Knights "nappy headed hos." With a record of calling Arabs "ragheads" and Jews "money grubbing," how did Imus last as long as he did? Why did presidential candidates and network news stars appear on his program when he insulted Hillary Clinton and Leslie Stahl? Was Imus worse than other shock-jocks or rappers? Why was last week's comment the last straw?